Car model does not render after using motion tracking, but its visible in viewport
When you press &quot;setup tracking scene&quot; after solving the camera movement, blender creates two collections: a foreground (with a cube as reference) and a background (a plane to catch shadows).
You can safely delete the background one if you don't need a shadow catcher.
See: https://blender.stackexchange.com/a/108876/92768